Opalescence is the optical phenomenon, which adds value to the opal and helps the gem belong to the royal family.
Opalescence
Opalescence is a milky white/blue type of iridescence.
Opal Glass
Opal glass is a milky white glass that mimics opals.
Opalescence
A variety of iridescence that is most often a light blue glow in color.
Opaque
Not transparent or translucent.
Opalescence
Milky or pearly appearance. Girasol.
Opaque
The quality of not allowing the transmission of light.
OPALESCENCE. A milky or pearly reflection from the interior of a stone.
OPALESCENT. Resembling or having the tints of opal; reflecting lustre from a single spot.
OPAQUE. When no light is transmitted.
Opalescence: Opalescence is a phenomenon. It is a shimmering display of light that appears to wash over the surface of an opal. A wide range of spectral colors is highlighted based upon light striking them from a particular direction or angle.
Opalescence
Opalescence is a kind of light play that happens with certain high quality stones. In these stones, light reflects and bounces around the stone structures which give them a wonderful aura and sometimes a milky blue form of iridescence.
O: opalescence, "Oro Verde"
P: padparashah, pavilion pectolite, pegmatite, peridot, petalite, petrifaction, Pezzottaite, phenakite, pietra dura, pleochroism, plique a jour, prasiolite, Prehnite, proteinaceous, pyrope garnet
Q: ...
opalescence (n) an optical effect produced in opals whereby an iridescent shimmering appears beneath the surface of a stone.
OPALESCENCE - Milky or pearly appearance of some common opal, opalescent glass, and other similar substances.
OPAQUE - Transmitting no apparent light; not transparent.
The term "opalescence" is commonly misused to describe opals play-of-color, but it should really be used to describe the milky translucence of the body color found in many opals.
opalescence Effect seen in a few minerals, chiefly opal (hence its name) which cause it to exhibit a glimmer of different colors when rotated or seen in different angles. Opalescent describes mineral exhibiting this effect.
are three major types of opals: common opal, opalescent precious opal (white or black, with a rainbow-like iridescence caused by tiny crystals of cristobalite), and fire opal (a milky stone that is firey orange to red in color with no opalescence).
Also known as Mexican opal, Mexican fire opal, Tanzanian fire opal, cherry fire opal, Ethiopian fire opal, Brazilian fire opal or sun opal, its legendary popularity instead comes from its breathtaking brilliance, opalescence, ...
Some vaseline glass was attractively graduated from an almost clear base to a deep-coloured top or rim, with the milky opalescence clearly visible.
Fire opals are a type of opal that is firey orange to red in color (but have no opalescence). These opals are rarely transparent - they are usually milky. Opal is a mineral composed of silica (and some water) and is a species of quartz.
This is called ‘opalescence’. The reddish and orange - colored stones known as fire - opal have pronounced color and only slight milkiness ; they display the customary opalescence in certain directions.
Adularescence The shimmering light or whitish opalescence which glides over the surface of some gems such as moonstone. Interference phenomena of the layered structure is the cause of this effect.
Moonstone is famous for its pearly blue opalescence and bronzy iridescent luster. Enlarge Photo credit: © International Colored Gemstone Association/Bart Curren
Moonstone ...
Opalescence, Opalescent - Showing an internal play of colors or iridescence. (Opal)
Opaque - Not allowing the transmission of any light through a mineral.
Oxides - Minerals containing a metal and oxygen as the main components.
A blue-whitish form of opalescence.
Akoya
A pearl produced by the Japanese "Akoya" oyster..
Opal contains up to thirty percent water. This, plus its ever-changing play of colors (called opalescence), give it the ability to mirror and magnify one's emotions. Different kinds of opal have varying effects on the emotions.
Appearance
Dark brown, exhibiting opalescence.
Enhancements
Fire agate is not enhanced.
Diffraction can cause a play of colours to appear on the surface in a phenomenon known as opalescence: the colour of the stone changes in flashes when the angle at which it is viewed is altered.
These extraordinary pieces are specially made to possess the lovely, pale white opalescence one sees in the natural gemstone known as the opal.
These changes in colour occur due to optical properties of the gemstone that reflect and scatter the light. Opal is the most famous example of an iridescent gemstone (its milky white iridescence is called opalescence).
00:37, 11 January 2008 (hist) (diff) N Opalescence ‎ (New page: Milky or pearly appearance of some common opal. See girasol)
00:37, 11 January 2008 (hist) (diff) N Oiling ‎ (New page: Oiling) ...
 See also: Crystal, Stone, Color, Surface, Cut
  
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